Vehicle spring



May 31, 1927.

W. H. WALLACE VEHICLE SPRING Filed April 8, 1925 avwmdoz Patented May 31, 1927..

WILLIAM H. WALL CE, F CLEVELAND, 0: 10, Assienon, ,B'Y rr'usnn essrenmm -rs; ITO THE EA'roN SPRING CORPORATION, or-nncruommromeen, conronerron or- .9, 1912., It'ifs'o'ne of the objects of the pres-' ent invention to overcome certain" objections to, the patented construction and ,p articu-' larly with reference to improving the r d ng. qualities and also to. insure that the ends of the 1 soft ileaves shall be properly sup- P0rted. =f

In this type of spring, some of the leaves I are made from soft or relatively non-resilient j'steell oriron instead of lusing'spring steel for all of the leaves, as 1s the usual practice The effect of thesoft leaves is.

y to slow upthe action of the spring-,particiu larly on'the rebound movements and, hence,

springs made in this manner have proved to possess easy riding'quaht esand eliminate the necessity for us ng devlces for checking the rebound, as is "the common practice in 'the following d's'cription ftaken in connecs connection With'sp spring s'teel} y t r Otherobjects' of the invention' an'd the teamma e novelty. jvvill be apparent from rings made entirely from tion with the accompanying drawings, of which: a

Figure" is aside elevation of a semielliptic tion;

vehicle spring, embodying my inven- Fig. 2 is an enlarged transverse section '7 on the line 2-2 of Fig. 1;.and-

' i Fig. 3. is a'vieW similarto Fig.2 but show- 35 ing aditterent arrangement of leaves. I J "Referring toFigs- 1 and 2, 10 indicates the main leaf of the spring whichlias, ac-

cording tothe usual practice, eyes 1'1.:at'tl1e ends thereof; The leaf 10 is'made'from resilient material such as ordinary spring steel and is backed up by a leaf 12,'that is slightly shorter than the leaf lO, and is made 7 from soft or non-resilient metal such as Wrought iron or low carbon steel. For this purpose I would recommend at steel having a carbon content as low as four or five,using the, customary commercial designation for-the carbon content. The leaf 12'is preferably of the same gauge or thickness as the leaf-10, and is backedup by 'a leafl3, of resilient material, whichis of substantially thehsame length. The leaf l3'isbacked up by-a shorter leaf I14, ofresilient material and the latter is' backed upby a still shorter leaf 15, of non-resilient material. The leaf ien't material. r

vsmem SERVING; a

.15 preferably of'the samelgau'georthick nessjaslthe :lea f' 12 and .is backed 'upby a leaf 16; offresi'lient material, and of "the same 7 length; Th'efleaf" 16 is b acked up by a shorter leaf 17, of resilientm' aterial, and the latter isxba'ckedup by a still shorter [leaf 18, of non-resilient materiah Thef leaf-l'gis I 1n. the application of my invention-teen actual spring made from leaves two inches Wide, Witht-he length betiveen thee 'es l1, fifty four inches and Whi'ch'Would have-fa deflection rate of one hundred and -fifteen pounds per inch, the leaves 10, 12, '15 and 18 wereiformed ofNoQ3 gauge. stock and the" other leaves of No. 7' gauge stock,- there be ingeleven leaves in all: lhefleaves l2-and 13 Weref53 1 inches long,'-; the leaf ltfvvjas s5 46 /giiijches-long, the leaves 15 and leawere 37 A inches long, the leaf 17 Wa's31'inches long, the leaves "18 and- 19 were 24 /2 inches longi and the leaves-20t and 21' Were-18V inches and ll fl inches long, respectively. 1

I have found it desirable to have each f of thinner gauge and this arrangement is illustmted in ri -s 1- and 2. It'will also be, I v

length, F-ojthat the leaf of non-resilient mate rial .is supported throughout .itsjentire length and the endsof the leaves of 11on.-re- 1 sihent material are thusprevented from taking a permanentset, when the springd e fiects, that wonldpause the" ends to droopf away from .theleaf immediately above. By

'thus-maintaining the ends of the non-re silien t; leaves in contact with the adjoiningleaves the rate of deflection maintainedsubstantially uniform, commercially speak-if ing', throughout the'life 'of the spring;

illustrated in Figs. land -2,- isbac"ked upby 9O leaf, of non-resilient nateij'ia-hbacked up by I V a plurality of leaves of resilient material but While, -asabove stated, is desirable to 1 1 ,1 v

' haveeach nen-resilient leaf backed up loya latter 'is .b'aekecl spring, Fig. 3

plurality ofleaves of thinner gauge mate'- rrial it is,' 'ne yertheless,' practicable to con-V 'strnct a spring"1n .ivli1'cl1 v leaves are alternated XVltllilGilYCS of resilient the non resilient material and 0f; thesanie gauge, antl a thus constructed, is illustrated Whe1'ein "-the main leaf 10" is backed up by a non-resilient leaf 23, "ancl'the' latter is backed up by afrlesilient leaf 24,. of the saine length; f 'lPhe. leaffii is backed up by leaf25, ,1,0f non-resilient material, fancl' the si'li ent lnaterial gantl the leaves and 29' of resilient -material, the leaf 28 being of the 1 same length as the leaf- .27., l 1

HaYingithns described my invention, what Iclaimis:v

spring ,co nprisingfa PlUl'ELlltyI-Of snperposetlgleayes of varying lengths some 0f whichjale formed of resilient nietal and the 'others'ef relatively non-resilient metal, each of saitl leases of non resilientmetatheing baekedgup;.hy a plurality e f leaves of resilient metal. of which the One adjoining theleaf 0f non-resilient metal is of substanvtiall'y the "same length as the latter, as and for the purpose'cljescrihetl.

12; A s orin' com risin a aluralitn of g i. a. .l

' superposed leaves of varying lengths some 1 eachrof sair 55 of a which are formed of resilient metal and theothers of i-el'atitely non-resilient ln'ietal,

l leares of non-resilient metal being backetlg'up by, a plurality of leaves .o ffres gsilientfinetal of less thicknessthan theleaf --of;nen-resi lient metal anclv the one of said leavesef resilient metal. Which'adjeins' the leaf of non-resilientmetal being ofsnbstantially the same length asfthe latter, as and 40 .1

for the purposes clescribecl.- v V A multiple-leafspring consisting gotlia main leaf of resilient inetaha leaf of'rela ti elj' non re'silient metal :Jadj oining :fsaicl nain leaf, a leafeof resilient inetalacljoinw the second-mentioned leaf and substantially'the same length as the latter, a leaf of resilient metal adjoining the Pthircl-meniti onecl leaf and shorter than the latter, and, a series of reinforcing leaves for the leaves] mentioned, some of which arle of 'resil'ient metal anclfthe others of"non resilientn etal; and each of the latter beinghackecl-np by a one Of. the last-mentioned leaves of resilient metal which, is a of substantially the same, length as the leaf v0f non-resilient ine'tal;

4.;A multiple-leaf.spring consistin jefa V inain'leaf of resilient metal; a leaf 6 rel'a tively none-resilient netal" adjoining" said ma n leaf, a leaf of res1.l1entmetal ad oin ng the second-mentioned leaf and. substantially the same lengthas the'lattei.-,ia leafjfof resilient inetalyacljoining the thircl-mentiened leaf and shorter than the latter, and 'a series of reinforeing leaves for ethe leaves'iinen 'tionecl, seineoff which are, Of resilient nietal an l the others f non-resilient riwtalgand each of theflatt'er" being backeclaip byQne pf the last-mentioned leaves 'of resilient metal which is 10f substantially the. same length "as.

the leaf (if non r e'siliei'i't metal; saicl leavesidf llOI'l lQSlllBI'llZ i netal being iof substantially the same thickness as said injainleaffancl the otherfleavesef resilient n'ietal being e'fless poses clescr'ibed.-"

1 In testimony vt zhereef- I affix m signature.-

-' 1 WIL L I AM WALLACE,

bthickness ithanfthe, sani'e, as and fOrJthe pur- 

